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Cryptowhatever prevention

I had someone get hit with Cryptolocker. Since they had good file permissions and a good backup, I was able to recover 100% of the files without any trouble at all. So at least that worked out, but I’m wondering what additional steps I can do to try and prevent them from getting infected in the first place.

Is there certain antivirus software that is better than others for this stuff?

I saved the infected computer, but removed it from the network. Does anyone have any good ways to try and figure out where they got infected from? It always seems like it's the same places who get infected while other places seem never get anything.

Reading that Guide will help you understand what CryptoLocker Ransomware does and provide information for how to deal with it...including prevention.

There is also a lengthy ongoing discussion in this topic: Cryptolocker Hijack Program. Since this infection is so widespread, rather than have everyone start individual topics, it would be best (and more manageable for staff) if you posted any questions, comments or requests for assistance in that topic discussion.